“The average CPM of a 30-second spot in prime time has jumped from $8.28 in 1986 to $22.65 in 2008”

The average price of reaching 1,000 households with a 30-second spot in prime time, according to Media Dynamics, has jumped from $8.28 in 1986 to $22.65 in 2008 — but effectively more like $32, because between 150 and 200 of those 1000 households use DVRs to skip past the ads.

via an AdAge article that is now gated. Google cached version is here.